Colored resin composition, colored film, decorated substrate

A colored resin composition with azomethine and bisbenzofuranone pigments addresses visibility and layering issues, providing a single-layer film with high transmittance and blocking properties for near-infrared sensors and cameras, enhancing design and functionality.

JP7743839B2Active Publication Date: 2025-09-25TORAY INDUSTRIES INC
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Patent Information

Application Number
JP2022558069
Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Priority Date
2021-10-18
Filing Date
2022-09-16
Publication Date
2025-09-25
Estimated Expiration
2042-09-16

AI Technical Summary

Technical Problem

Existing colored films for near-infrared sensors and cameras in decorative areas of displays have visibility issues due to conventional transparent or translucent covers, and require multiple layers for sensor wiring, near-infrared camera concealment, and blackout icons, increasing costs and complexity.

Method used

A colored resin composition containing specific amounts of azomethine and bisbenzofuranone pigments, with controlled crystallite sizes, to achieve high visible light blocking and near-infrared transmittance, providing achromatic reflection and transmission tones.

Benefits of technology

The composition enables a single-layer film with excellent near-infrared transmittance and visible light blocking, ensuring clear camera images and jet-black design without visible artifacts, suitable for concealing sensors and blackout icons.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present invention addresses the problem of providing a colored resin composition capable of forming a colored film that has high visible-light blocking properties and near-infrared transmitting properties as well as excellent reflection color tone and transmission color tone, and the present invention provides, as a means for solving the aforementioned problem, a colored resin composition containing a resin (A) and a colorant (B), wherein the colored resin composition contains at least an azomethine-based pigment and a bisbenzofuranone-based pigment as the colorant (B), the content of the azomethine-based pigment being 25-80 parts by weight and the content of the bisbenzofuranone-based pigment being 20-75 parts by weight when the total colorant weight is 100 parts by weight, and the content of the colorant (B) is 1-39 parts by weight with respect to a total content of 100 parts by weight of solid components.
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Citation Information

Patent Citations

  • Black curable resin composition

    JP1989170601A

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    JP1990034664A

  • Black matrix for color filters

    JP2012515233A

  • Color filter composition, infrared transmitting filter, manufacturing method therefor, and infrared sensor

    JP2014130173A

  • Composition for infrared transmission filter, infrared transmission filter, manufacturing method of infrared transmission filter, and infrared sensor

    JP2018120248A